8 Commits

Author SHA1 Message Date
Chad Brubaker
fa9beebb83 Expose findByIssuerAndSignature
This will be used to create a custom conscrypt TrustedCertificateStore
to avoid loading all of the trusted certificates into memory in a
keystore.

Change-Id: Iaf54b691393ecadae6c7ff56b8adc6a2a2923d29
2015-12-01 12:19:39 -08:00
Chad Brubaker
d3af962081 Expose findTrustAnchorBySubjectAndPublicKey
This allows for faster lookups of TrustAnchors when checking pin
overrides without needing to iterate over all certificates.

Currently only the system and user trusted certificate store are
optimized to avoid reading the entire source before doing the trust
anchor lookup, improvements to the resource source will come in a later
commit.

This also refactors System/UserCertificateSource to avoid code
duplication.

Change-Id: Ice00c5e047140f3d102306937556b761faaf0d0e
2015-11-30 17:20:00 -08:00
Chad Brubaker
5a1078f40d Add NetworkSecurityConfigProvider
Change-Id: I321e3ca94cc2a8d5e0e5d82a83b255ff5b8a71d2
2015-11-11 10:54:54 -08:00
Chad Brubaker
08d36202da Add support for debug-overrides configuration
Debug overrides are only used if the application is debuggable in
order to help local debugging and development by trusting additional
CAs. In a non-debuggable version of the application the debug-overrides
are ignored.

Trust anchors in the debug override configuration have two key
differences from those in base-config and domain-config:
1) trust anchors in the debug-overrides are trusted for all connections
in addition to any trust anchors included in the relevant base/domain
configs.
2) By default trust anchors in the debug config override pins, as their
purpose is for connecting to non-standard servers for debugging and
testing and those servers should not be pinned in the production
configuration.

Change-Id: I15ee98eae182be0ffaa49b06bc5e1c6c3d22baee
2015-11-10 12:40:00 -08:00
Chad Brubaker
bd173c28fc Support nested domain-config elements
Nested domain-config inherit unset parameters from the domain-config
they are nested in. This helps avoid copy and pasted configs that are
almost the same except a few minor differences for a domain with
slightly different requirements.

For example: Consider a domain-config for example.com that, among other
settings, does not enforce hsts. Now if you want the rules for
example.com to apply to secure.example.com except that hsts _is_
enforced you can make a nested domain-config for secure.example.com
under example.com that sets hstsEnforced="true" and nothing else.

Change-Id: I9e33f7e62127fd7f4f15c3560fff2f2626477bd4
2015-11-07 13:31:04 -08:00
Chad Brubaker
5f96702f58 Add xml source for network security configuration
XmlConfigSource parses an ApplicationConfig from an xml resource.
Currently this supports app-wide default configuration via the
base-config element, per domain via the domain-config element and
inheritance of unset properties at parse time.

Inheritance of unset properties is currently only:
domain-config -> base-config -> platform default configuration
Where the most specific value is used.
For example: If the base-config specifies trust anchors, all connections
will use those anchors except for connections to a domain which has a
domain-config that specifies trust anchors, in which case the
domain-config's trust anchors will be used. If the domain-config or
base-config don't set trust anchors, or don't exist, then the platform
default trust anchors will be used.

Nested domain-config entries, debug-overrides, and thorough
documentation of the xml format will follow in later commits.

Change-Id: I1232ff1e8079a81b340bc12e142f0889f6947aa0
2015-11-06 22:24:01 -08:00
Chad Brubaker
80a73f5939 Use a builder for NetworkSecurityConfig
The builder supports all the standard builder set* methods as well as
setting a parent builder to use when values are not set (recursively).
This allows us to have a level of inheretence in configurations without
complicating the lookup and trust checking logic by doing inheretence
when building the configs.

Change-Id: I054af83451e52761227479eadf9cb9803437505f
2015-11-05 12:50:30 -08:00
Chad Brubaker
6bc1e3966c Add initial network security config implementation
Initial implementation of a unified application wide static
network security configuration.

This currently encompases:
* Trust decisions such as what trust anchors to use as well as static
  certificate pinning.
* Policy on what to do with cleartext traffic.

In order to prevent issues due to interplay of various components in an
application and their potentially different security requirements
configuration can be specified at a per-domain granularity in addition
to application wide defaults.

This change contains the internal data structures and trust management
code, hooking these up in application startup will come in a future
commit.

Change-Id: I53ce5ba510a4221d58839e61713262a8f4c6699c
2015-11-04 14:31:18 -08:00